I get telemarketers calling my work. There's one that always asks to speak to the owner of the business, when I say that he's not in, they hang up on me. I've now started hanging up on them as soon as I hear 'owner of the business'.
There's also ones that don't ask to speak to the person in charge and they just start going on about changing our call rates and line rental and after about 5mins I get a chance to say... "umm.. I don't actually have any say in what happens with our phone accounts, I'm not the owner" .. and only then do they ask to speak to the owner, in which case I say they're not there and end the call.
There's also the ones that are automated, you pick up the phone and a recorded voice says 'please hold, a call is being transfered' .. then I just hang up before it transfers.
Sometimes if they ask who the owner is and when they'll be in the store I give them a false name and a time that I know no one will be there.